I just got the Hardware Reference Manual on ebay for the CDC Grid
Display Subsystem (Publication No. PD82134500 September, 1969, PD-1-0).
This doesn't appear to be on bitsavers; I'm not sure but I haven't
stumbled across it in the pdf/cdc folder. The manual is a photocopy
of an original and will be scanned for bitsavers.
GRID stands for Graphical Interactive Display, making "Grid Display
Subsystem" contain a redundant "Display" when expanded. This looks like
an interesting system with a builtin console and enclosure containing
all the graphics processing hardware.
Has anyone used one? Anyone got any photos? The manual just has
diagrams.
Included with the manual was:
- a short whitepaper on the "GRID Operating System (GOS)",
marked "Robert Gammill 9/11/70", 13 pgs.
- "GRID* USER MANUAL", John Walker, David Robertson, Robert Gammill,
National Center for Atmospheric Research, Boulder, Colorado 80302,
December 1971, 36 pgs.
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Fred Cisin wrote:
> On Fri, 14 Dec 2007, Roy J. Tellason wrote:
>> This whole idea strikes me as just plain crazy...
>> But! For some reason the above reminded me of something that I was
>> considering early on, probably early 1970s or so. Instead of a drum just
>> use a loop of tape. You can start with an old reel-to-reel deck, ignoring
>
> Howzbout an 8-track?
>
> Unfortunately, the kids today don't even remember them, so wouldn't fully
> appreciate the absurdity.
>Ben alias woodelf wrote:
>Was not the stringy floppy a medium like that?
First off, I would like to add that I am only 17 but to answer the question, yes, the stringy floppy was to a degree
just like the 8-track drive people made. Actually, I have here instructions on how to modify a regular 8-track deck
to work with a regular TRS-80 model I.
_________________________________________________________________
Introducing the City @ Live! Take a tour!
http://getyourliveid.ca/?icid=LIVEIDENCA006
I've never done it with either method.
http://www.youtube.com/watch?v=wQXhny3R7lk
---
That is EXACTLY the technique I used! Note the flux
application beforehand and putting the flat of the
soldering iron towards the body of the chip, with
solder going in towards the board over surface of
the iron.
Hello people,
I am looking for Chad Martin to talk about his computer in my hand. If you
know his current email address please let me know off-line. His previous one
(name @ fli...) stopped working.
Best,
vax9000
>Whereabouts are you? I'm in Regina, Saskatchewan and in my basement I have
>a VAXstation 4000/100, Sun Sparcstation 20 and Sun UltraSparc 1/170E, all
>running, plus a VAXstation 3100 and a VAX 4000/100 (neither running but both
>should be in working order).
>
>Jim
I live in Kamloops BC so I am two provinces over. :( The closest thing I found DEC related in this town was a
random EIA distribution panel for a rack and that was in the trash.
>I posted just a few days ago about two dec racks (corp cabs) going out to
>the trash that day. They are still out there, but the dumpster arrived today
>so they will be gone tomorrow.
>
>Also going out the door and into the dumpster tomorrow, a "wide" corp cab.
>This is the more modern beige rack, but this one is wider than usual (I
>think vax's were commonly in this type of cabinet). There is the normal 19"
>wide rackspace, but on this one there an extension on the side about 1/3 of
>a cabinet wide used for cable management. It formerly housed an 11/44, TS05,
>RX02, and RA81. If someone wants them speak up now....
>
>Jay
Ack! even if you were close to me it's too late now. :(
_________________________________________________________________
Read what Santa`s been up to! For all the latest, visit asksantaclaus.spaces.live.com!
http://asksantaclaus.spaces.live.com/
> As an expert in this area, my opinion is that silicon sensors have a
long
> ways to catch up to film. Both CCD and CMOS sensors lack in
resolution
> and the spatial sampling artifacts Der Mouse mentioned are only part
of
> the problem.
Another part of the problem is archiving the images. Decay of film/paper
photography is well known and incredibly slow(esp. B&W). Digital bitrot
is much faster and not well known. Just ask anyone who's lost a hard
disk drive full of digital baby pictures. I've also seen a lot of
discussion about CD-ROM and DVD-ROM lifespan and it's not good either.
>
>Subject: How uncommon are DEC racks these days
> From: john ball <ballsandy at msn.com>
> Date: Tue, 25 Dec 2007 23:44:43 -0200
> To: <cctalk at classiccmp.org>
>
>
>I have had my fun with Unix boxes but I think it's time to try something a
little older and more complex.
>I first thought about looking for an older IBM mainframe like the system/36
but my chances of finding one were pretty much slim to none so I then
thought about the computers that DIGITAL made. Yes it would be fantastic
to own something like a PDP-12 rack (how often do you see a bright green
computer these days?) but knowing how my luck is almost never with me I
would have to settle with something smaller. That returns me to my chances
of finding a PDP. I live in Western Canada and so far it has been hard
enough just finding a SPARCstation 1+ so I assume that something like a
PDP will be even harder. How common are DEC's these days and where are
they usually found and how much do they usually go for if any price at
all?
PDP-12s are rare. there were very few made and fewer available. Estimates are
around a dozen around.
More likely candidates and PDP-10 (later models), PDP-11s.
>It would be a rather nice (but late) christmas present to myself.
You can find PDP-11s easily enough, PDP-8 of the omnibus era are easy
to find earlier 8s are much fewer. In the PDP10 realm the later '10s
(system 20s) are still findable though there were not all that many
made in that family.
So the likely candidates in order of most frequently found/bought to least.
You can buy or find these fairly cheap
=======================================
microVAX (all sorts and easily found)
PDP-11 (qbus) very common
PDP-11 Unibus
PDP-8[E,F,M,a] omnibus
VAX 750 and 730s
Good luck!
============
VAX (78x series, )
PDP-8 earlier [L, I, and straight]
PDP10 (system 20 later models)
Everything else is scarce to rare or only a few left on earth.
What differentiates them is production volumes. Some the volumes were
very small like a PDP-6 where there were something less than 10 made.
Allison
>_________________________________________________________________
>Read what Santa`s been up to! For all the latest, visit asksantaclaus.spaces.live.com!
>http://asksantaclaus.spaces.live.com/=
Are you interested in purchasing working Kaypro "8"'s [not II, 2, IV, 4] and
parts / items for them? They are much more powerful than the early standard
Kaypros and I have found none on my many web searches, although they were
very popular upgrades / modifications in the 1980's.
I am posting a lot of information on _www.vintage-computer.com_
(http://www.vintage-computer.com/) , now that I can finally access it. There were about 5
previous posts by me "GADFRAN" but I was not able to do anything else on the
site except post.
I will also check back on this website also periodically.
We are downsizing in retirement and sometime in the Spring of 2008, April or
May, we will get our next dumpster. They are on the list to be disposed of
,unless it is worthwhile disposing of them in another acceptable way.
Naturally,I will try eBay with a local go between.
They served my wife and I very well in the 1980's and early 1990's in our
many professional, volunteer and hobbies.
I can send you a detailed list with even s/n, model numbers, digital
pictures, etc.
Briefly:
all 6 working Kaypro "8"'s were modified by me from Kaypro 4's using
Microcornucopia directions and parts. I kept them running with whatever that was
needed including:
2 CRT's + boards
4 main boards
4 power supplies
2 keyboards
numerous chips including Z80's - A and B, etc.
numerous Teac and Tandon drives
Technical manuals
original software
etc.
Thanks!
Frank
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-------------- Original message from "Jay West" <jwest at classiccmp.org>: --------------
> I posted just a few days ago about two dec racks (corp cabs) going out to
> the trash that day. They are still out there, but the dumpster arrived today
> so they will be gone tomorrow.
>
> Also going out the door and into the dumpster tomorrow, a "wide" corp cab.
> This is the more modern beige rack, but this one is wider than usual (I
> think vax's were commonly in this type of cabinet). There is the normal 19"
> wide rackspace, but on this one there an extension on the side about 1/3 of
> a cabinet wide used for cable management. It formerly housed an 11/44, TS05,
> RX02, and RA81. If someone wants them speak up now....
>
> Jay
>
>
If no one wants the whole thing ???
I'm still looking for the top and 1 side panel for my 11-44 system
Has the flip up rails for the 11-44. So the main top panel is removeable.
- Jerry
Jerry Wright
JLC inc
g-wright at att.net
I've got a pile of Z80 ICs here that I don't need; anybody want some?
Z80 CPU
Z80 DART
Z80 SIO
Z80 CTC
Some A & B versions, Mostek, SGS & Zilog, various date codes.
Also some SMC CRT9007s; plastic & ceramic, some with heat sinks.
mike
